static void read_inter_block_mode_info(VP9_COMMON *const cm, MACROBLOCKD *const xd, const TileInfo *const tile, MODE_INFO *const mi, int mi_row, int mi_col, vp9_reader *r) { MB_MODE_INFO *const mbmi = &mi->mbmi; const BLOCK_SIZE bsize = mbmi->sb_type; const int allow_hp = cm->allow_high_precision_mv; int_mv nearest[2], nearmv[2], best[2]; int inter_mode_ctx, ref, is_compound; read_ref_frames(cm, xd, r, mbmi->segment_id, mbmi->ref_frame); is_compound = has_second_ref(mbmi); for (ref = 0; ref < 1 + is_compound; ++ref) { const MV_REFERENCE_FRAME frame = mbmi->ref_frame[ref]; vp9_find_mv_refs(cm, xd, tile, mi, xd->last_mi, frame, mbmi->ref_mvs[frame], mi_row, mi_col); } inter_mode_ctx = mbmi->mode_context[mbmi->ref_frame[0]]; if (vp9_segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) { mbmi->mode = ZEROMV; if (bsize < BLOCK_8X8) { vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM, "Invalid usage of segement feature on small blocks"); return; } } else { if (bsize >= BLOCK_8X8) mbmi->mode = read_inter_mode(cm, r, inter_mode_ctx); } if (bsize < BLOCK_8X8 || mbmi->mode != ZEROMV) { for (ref = 0; ref < 1 + is_compound; ++ref) { vp9_find_best_ref_mvs(xd, allow_hp, mbmi->ref_mvs[mbmi->ref_frame[ref]], &nearest[ref], &nearmv[ref]); best[ref].as_int = nearest[ref].as_int; } } mbmi->interp_filter = (cm->mcomp_filter_type == SWITCHABLE) ? read_switchable_filter_type(cm, xd, r) : cm->mcomp_filter_type; if (bsize < BLOCK_8X8) { const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize]; // 1 or 2 const int num_4x4_h = num_4x4_blocks_high_lookup[bsize]; // 1 or 2 int idx, idy; int b_mode; for (idy = 0; idy < 2; idy += num_4x4_h) { for (idx = 0; idx < 2; idx += num_4x4_w) { int_mv block[2]; const int j = idy * 2 + idx; b_mode = read_inter_mode(cm, r, inter_mode_ctx); if (b_mode == NEARESTMV || b_mode == NEARMV) for (ref = 0; ref < 1 + is_compound; ++ref) vp9_append_sub8x8_mvs_for_idx(cm, xd, tile, j, ref, mi_row, mi_col, &nearest[ref], &nearmv[ref]); if (!assign_mv(cm, b_mode, block, best, nearest, nearmv, is_compound, allow_hp, r)) { xd->corrupted |= 1; break; }; mi->bmi[j].as_mv[0].as_int = block[0].as_int; if (is_compound) mi->bmi[j].as_mv[1].as_int = block[1].as_int; if (num_4x4_h == 2) mi->bmi[j + 2] = mi->bmi[j]; if (num_4x4_w == 2) mi->bmi[j + 1] = mi->bmi[j]; } } mi->mbmi.mode = b_mode; mbmi->mv[0].as_int = mi->bmi[3].as_mv[0].as_int; mbmi->mv[1].as_int = mi->bmi[3].as_mv[1].as_int; } else { xd->corrupted |= !assign_mv(cm, mbmi->mode, mbmi->mv, best, nearest, nearmv, is_compound, allow_hp, r); } }
static void read_inter_block_mode_info(VP9Decoder *const pbi, MACROBLOCKD *const xd, const TileInfo *const tile, MODE_INFO *const mi, int mi_row, int mi_col, vp9_reader *r) { VP9_COMMON *const cm = &pbi->common; MB_MODE_INFO *const mbmi = &mi->mbmi; const BLOCK_SIZE bsize = mbmi->sb_type; const int allow_hp = cm->allow_high_precision_mv; int_mv nearestmv[2], nearmv[2]; int inter_mode_ctx, ref, is_compound; read_ref_frames(cm, xd, r, mbmi->segment_id, mbmi->ref_frame); is_compound = has_second_ref(mbmi); for (ref = 0; ref < 1 + is_compound; ++ref) { const MV_REFERENCE_FRAME frame = mbmi->ref_frame[ref]; RefBuffer *ref_buf = &cm->frame_refs[frame - LAST_FRAME]; xd->block_refs[ref] = ref_buf; if ((!vp9_is_valid_scale(&ref_buf->sf))) vpx_internal_error(xd->error_info, VPX_CODEC_UNSUP_BITSTREAM, "Reference frame has invalid dimensions"); vp9_setup_pre_planes(xd, ref, ref_buf->buf, mi_row, mi_col, &ref_buf->sf); vp9_find_mv_refs(cm, xd, tile, mi, frame, mbmi->ref_mvs[frame], mi_row, mi_col, fpm_sync, (void *)pbi); } inter_mode_ctx = mbmi->mode_context[mbmi->ref_frame[0]]; if (vp9_segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) { mbmi->mode = ZEROMV; if (bsize < BLOCK_8X8) { vpx_internal_error(xd->error_info, VPX_CODEC_UNSUP_BITSTREAM, "Invalid usage of segement feature on small blocks"); return; } } else { if (bsize >= BLOCK_8X8) mbmi->mode = read_inter_mode(cm, xd, r, inter_mode_ctx); } if (bsize < BLOCK_8X8 || mbmi->mode != ZEROMV) { for (ref = 0; ref < 1 + is_compound; ++ref) { vp9_find_best_ref_mvs(xd, allow_hp, mbmi->ref_mvs[mbmi->ref_frame[ref]], &nearestmv[ref], &nearmv[ref]); } } mbmi->interp_filter = (cm->interp_filter == SWITCHABLE) ? read_switchable_interp_filter(cm, xd, r) : cm->interp_filter; if (bsize < BLOCK_8X8) { const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize]; // 1 or 2 const int num_4x4_h = num_4x4_blocks_high_lookup[bsize]; // 1 or 2 int idx, idy; PREDICTION_MODE b_mode; int_mv nearest_sub8x8[2], near_sub8x8[2]; for (idy = 0; idy < 2; idy += num_4x4_h) { for (idx = 0; idx < 2; idx += num_4x4_w) { int_mv block[2]; const int j = idy * 2 + idx; b_mode = read_inter_mode(cm, xd, r, inter_mode_ctx); if (b_mode == NEARESTMV || b_mode == NEARMV) for (ref = 0; ref < 1 + is_compound; ++ref) vp9_append_sub8x8_mvs_for_idx(cm, xd, tile, j, ref, mi_row, mi_col, &nearest_sub8x8[ref], &near_sub8x8[ref]); if (!assign_mv(cm, xd, b_mode, block, nearestmv, nearest_sub8x8, near_sub8x8, is_compound, allow_hp, r)) { xd->corrupted |= 1; break; }; mi->bmi[j].as_mv[0].as_int = block[0].as_int; if (is_compound) mi->bmi[j].as_mv[1].as_int = block[1].as_int; if (num_4x4_h == 2) mi->bmi[j + 2] = mi->bmi[j]; if (num_4x4_w == 2) mi->bmi[j + 1] = mi->bmi[j]; } } mi->mbmi.mode = b_mode; mbmi->mv[0].as_int = mi->bmi[3].as_mv[0].as_int; mbmi->mv[1].as_int = mi->bmi[3].as_mv[1].as_int; } else { xd->corrupted |= !assign_mv(cm, xd, mbmi->mode, mbmi->mv, nearestmv, nearestmv, nearmv, is_compound, allow_hp, r); } }